/Engine/Source/Runtime/CoreUObject/Public/UObject/Stack.h
Replacement for Step that checks the for byte code, and if none exists, then PropertyChainForCompiledIn is used. Also, makes an effort to verify that the params are in the correct order and the types are compatible.
template<class [TProperty](API\Runtime\CoreUObject\UObject\TProperty), typename TNativeType> TNativeType & StepCompiledInRef ( void *const TemporaryBuffer )